Towards Remote Chemical Sensing: Backward-Generated Coherent Anti-Stokes Raman Scattering
NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS AND DEVICES XX（2021）
Abstract
COVID-19 pandemic is calling for new methods of remote chemical sensing, which can potentially detect small number of viral particles in air at safe distances. Raman spectroscopy is a chemically specific spectroscopic technique; however, it is often difficult to apply it for remote sensing due to the non-directional scattering. We propose and demonstrate a set of novel ways to achieve directional backward emission through nonlinear Raman interactions.
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Key words
Raman spectroscopy, nonlinear spectroscopy, remote sensing, standoff detection, COVID-19, chemical sensing, coherent anti-Stokes Raman scattering, stimulated Raman scattering
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